16-Pin SO (derated 7mW/°C above +70°C)................600mW
Storage Temperature Range ........................... -65°C to +150°C
Lead Temperature (soldering, 10s) ................................. +300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics
(V
CC
= +5V, T
A
= +25°C, unless otherwise noted.)
PARAMETER
Operating Voltage Range
Supply Current
Power-Up Reset Deassertion
Power-Up Reset Assertion
Hysteresis
Reset Output Pulse Width
RESET
OUTPUT (Open Drain)
RESET
OUTPUT (SO Package
Only)
WDO
Output (MAX699 SO
Package Only)
MAX699 Watchdog Timeout
Period
MAX699 Minimum WDI Input
Pulse Width
MAX699 WDI Input Threshold
MAX699 WDI Input Current
V
CC
= +5V
WDI = V
CC
WDI = 0V
-50
Logic-low
Logic-high
3.8
20
-15
50
0.8
Output low
Output high
Output low
Output high
Output low
Output high
I
SINK
= 1.6mA, V
CC
= 4.4V
I
SOURCE
= 1μA, V
CC
= 5V
I
SINK
= 1.6mA, V
CC
= 5V
I
SOURCE
= 1μA, V
CC
= 4.4V
I
SINK
= 1.6mA, V
CC
= 5V
I
SOURCE
= 1μA, V
CC
= 4.4V
3.5
3.5
0.4
3.5
0.4
140
T
A
= full
T
A
= full
4.50
4.4
40
500
0.4
4.65
T
A
= full
CONDITIONS
MIN
3.0
TYP
MAX
5.5
5
4.75
UNITS
V
mA
V
V
mV
ms
V
V
V
s
ns
V
µA
www.maximintegrated.com
Maxim Integrated │
2
MAX698/MAX699
Low-Cost, Power-On Reset
and Watchdog Controllers
Pin Configuration
PIN
SO
1, 4, 9
2, 3
5–8, 10–14
PDIP
3, 4, 8
1, 2
5, 6
NAME
GND
V
CC
N.C.
Chip Power Ground
+5V Sense Input and MAX698/MAX699 Chip Power
No Connection
(MAX699 Only.) A three-level input. If WDI remains high or low for more
than the watchdog timeout period,
RESET
pulses low (WDO also goes
low on the MAX699 SO package). If WDI is unconnected, the watchdog
circuit is disabled.
(MAX699 Only.) Goes low when WDI remains high or low for more
than the watchdog timeout period.
WDO
is set high at the next WDI
transition. If WDI is unconnected or at midsupply,
WDO
remains high.
WDO
also remains high when V
CC
falls below 4.4V.
Goes low when V
CC
falls below internally set threshold (see the
Electrical Characteristics
table).
Goes high when V
CC
falls below internally set threshold.
FUNCTION
11
6
WDI (MAX699 Only)
14
—
WDO
(MAX699 Only)
15
16
7
—
RESET
RESET
Pin Description
WDI*
WATCHDOG
TIMER
WDO*
RESET
TIMER
RESET
V
CC
RESET*
V
CC
POWER-ON
RESET
4.65V
MAX698
MAX699
GND
*WDI ON MAX699 ONLY
RESET ON SO PACKAGE ONLY
WDO ON SO MAX699 ONLY
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Maxim Integrated │ 3
MAX698/MAX699
Low-Cost, Power-On Reset
and Watchdog Controllers
Chip Topography
Package Information
For the latest package outline information and land patterns
(footprints), go to
www.maximintegrated.com/packages.
Note
that a “+”, “#”, or “-” in the package code indicates RoHS status
only. Package drawings may show a different suffix character, but
the drawing pertains to the package regardless of RoHS status.
PACKAGE
TYPE
8 PDIP
16 Wide SO
PACKAGE
CODE
P8-2
W16-1
OUTLINE
NO.
21-0043
21-0042
LAND
PATTERN NO.
—
90-0107
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Maxim Integrated │ 4
MAX698/MAX699
Low-Cost, Power-On Reset
and Watchdog Controllers
Revision History
REVISION
NUMBER
4
5
REVISION
DATE
5/13
9/14
DESCRIPTION
Corrected WDI SO pin number in
Pin Description
No /V OPNs; removed automotive reference from
Applications
PAGES
CHANGED
3
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed.
Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
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